Showing the changes to java/pkg/sun/rmi/server/ActivationGroupInit.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2002, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.rmi.server; | |
| 27 | + | |
| 28 | +import java.rmi.activation.ActivationGroupDesc; | |
| 29 | +import java.rmi.activation.ActivationGroupID; | |
| 30 | +import java.rmi.activation.ActivationGroup; | |
| 31 | + | |
| 32 | +/** | |
| 33 | + * This is the bootstrap code to start a VM executing an activation | |
| 34 | + * group. | |
| 35 | + * | |
| 36 | + * The activator spawns (as a child process) an activation group as needed | |
| 37 | + * and directs activation requests to the appropriate activation | |
| 38 | + * group. After spawning the VM, the activator passes some | |
| 39 | + * information to the bootstrap code via its stdin: <p> | |
| 40 | + * <ul> | |
| 41 | + * <li> the activation group's id, | |
| 42 | + * <li> the activation group's descriptor (an instance of the class | |
| 43 | + * java.rmi.activation.ActivationGroupDesc) for the group, adn | |
| 44 | + * <li> the group's incarnation number. | |
| 45 | + * </ul><p> | |
| 46 | + * | |
| 47 | + * When the bootstrap VM starts executing, it reads group id and | |
| 48 | + * descriptor from its stdin so that it can create the activation | |
| 49 | + * group for the VM. | |
| 50 | + * | |
| 51 | + * @author Ann Wollrath | |
| 52 | + */ | |
| 53 | +public abstract class ActivationGroupInit | |
| 54 | +{ | |
| 55 | + /** | |
| 56 | + * Main program to start a VM for an activation group. | |
| 57 | + */ | |
| 58 | + public static void main(String args[]) | |
| 59 | + { | |
| 60 | + try { | |
| 61 | + if (System.getSecurityManager() == null) { | |
| 62 | + System.setSecurityManager(new SecurityManager()); | |
| 63 | + } | |
| 64 | + // read group id, descriptor, and incarnation number from stdin | |
| 65 | + MarshalInputStream in = new MarshalInputStream(System.in); | |
| 66 | + ActivationGroupID id = (ActivationGroupID)in.readObject(); | |
| 67 | + ActivationGroupDesc desc = (ActivationGroupDesc)in.readObject(); | |
| 68 | + long incarnation = in.readLong(); | |
| 69 | + | |
| 70 | + // create and set group for the VM | |
| 71 | + ActivationGroup.createGroup(id, desc, incarnation); | |
| 72 | + } catch (Exception e) { | |
| 73 | + System.err.println("Exception in starting ActivationGroupInit:"); | |
| 74 | + e.printStackTrace(); | |
| 75 | + } finally { | |
| 76 | + try { | |
| 77 | + System.in.close(); | |
| 78 | + // note: system out/err shouldn't be closed | |
| 79 | + // since the parent may want to read them. | |
| 80 | + } catch (Exception ex) { | |
| 81 | + // ignore exceptions | |
| 82 | + } | |
| 83 | + } | |
| 84 | + } | |
| 85 | +} | |